EUVD-2026-70748
GHSA-wxm7-78m8-pmch
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Admin authentication required (PR:H) per CVSS 4.0 input; scope change (S:C) because root command execution on a NAS directly affects attached storage and downstream connected systems.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability has been found in D-Link DNS-340L 1.01B04. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/addon_center.cgi of the component Add-On Center. Such manipulation of the argument f_name/f_url/f_flag/f_login_user leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Articles & Coverage 2
AnalysisAI
OS command injection in the D-Link DNS-340L NAS firmware 1.01B04 allows a remote administrator to execute arbitrary operating system commands via unsanitized parameters in the Add-On Center CGI handler at /cgi-bin/addon_center.cgi. The parameters f_name, f_url, f_flag, and f_login_user are passed without sanitization to a shell command, enabling full root-level device takeover. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires administrator-level authentication to the D-Link DNS-340L web management interface (CVSS 4.0 PR:H). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N) characterizes this as network-exploitable with low complexity but requiring administrator-level authentication, which is the primary barrier against mass automated exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your infrastructure inventory to identify all D-Link DNS-340L NAS devices currently deployed and confirm their firmware versions. …
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Same weakness CWE-77 – Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
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